Using Transition Metal Oxide, Sulfide, Or Salt Patents (Class 585/661)
  • Patent number: 10150715
    Abstract: Process for dehydrogenation of alkanesor alkylbenzenes by using metal sulfide catalyst under the presence of small amounts of hydrogen sulfide.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: December 11, 2018
    Assignee: Haldor Topsoe A/S
    Inventors: Poul Erik Højlund Nielsen, John Bøgild Hansen
  • Patent number: 9238600
    Abstract: A process for improving the yield of ethylene and propylene from a light naphtha feedstock includes obtaining light naphtha feedstock from a primary cracking zone having a cracking catalyst. The light naphtha feedstock is contacted with an olefin catalyst in an olefin producing zone to produce an ethylene- and propylene-rich stream. After reacting with the olefin catalyst, the ethylene- and propylene-rich stream is separated from the olefin catalyst from in a separator zone. At least a portion of the olefin catalyst is regenerated by combusting coke deposited on a surface of the olefin catalyst in an oxygen-containing environment, and at least a portion of the olefin catalyst is heated. These portions could be the same one or they could be different. In some embodiments, at least a portion of the olefin catalyst could be neither regenerated nor heated. The olefin catalyst is returned to the olefin producing zone.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: January 19, 2016
    Assignee: UOP LLC
    Inventors: David A. Wegerer, Brian W. Hedrick, Zhihao Fei, Daniel N. Myers, Vincenza Myers, Paolo Palmas, Laura E. Leonard
  • Patent number: 9120714
    Abstract: The invention relates to a process for producing an alkene by non-oxidative dehydrogenation of an alkane, comprising contacting a feed stream comprising the alkane with a catalyst composition comprising an unsupported catalyst comprising ZrV2O7 at a temperature of 400 to 600° C.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: September 1, 2015
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Kartick Chandra Mondal, Patel Himanshu
  • Publication number: 20150073185
    Abstract: Provided is a Group 9 novel metal catalyst complex further comprising a ketone-containing cocatalyst. The metal catalyst complex is useful in generating olefins from alkanes with great efficiency. In one embodiment, provided is an iridium catalyst complex useful in the dehydrogenation of alkanes comprising a ketone-containing cocatalyst and iridium complexed with a tridentate ligand. Also provided is a novel dehydrogenation method which utilizes the catalyst composition. In other embodiments, a novel process for preparing oligomers from alkanes utilizing the catalyst composition is provided.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 12, 2015
    Applicants: Rutgers, The State University of New Jersey, Chevron U.S.A. Inc.
    Inventors: Alan Stuart Goldman, Robert Timothy Stibrany, Robert J. Saxton, Oleg MIRONOV
  • Publication number: 20150018593
    Abstract: The present invention relates to a catalyst characterized in that it comprises a) at least one metal compound selected from a group consisting of metal carbide, -nitride, -silicide, -phosphide and -sulfide or mixtures thereof, wherein the metal is selected from a group consisting of molybdenum, tungsten, tantalum, vanadium, titanium, niobium, lanthanum and chromium, and b) at least one non-Brønsted-acidic binder selected from a group consisting of AlPO4, Bentonite, AlN and N4Si3. Furthermore, the present invention relates to a process or a device for the preparation of olefins from C2-, C3- or C4-alkanes using the catalyst.
    Type: Application
    Filed: March 14, 2013
    Publication date: January 15, 2015
    Inventor: Christian Trischler
  • Patent number: 8927799
    Abstract: A process for the production of propylene from a propane rich hydrocarbon source is presented. The process converts a propane rich stream and uses less equipment and energy for the separation and production of propylene. The process uses a non-noble metal catalyst and utilizes a continuous reactor-regeneration system to keep the process on line for longer periods between maintenance.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: January 6, 2015
    Assignee: UOP LLC
    Inventors: David N. Myers, Daniel N. Myers, Joseph E. Zimmermann
  • Patent number: 8859837
    Abstract: The present invention relates to a process for producing lower olefinic hydrocarbons by oxidative dehydrogenation of paraffinic lower hydrocarbons. More particularly the present invention provides a process for converting a feedstream comprising a paraffinic lower hydrocarbon and carbon dioxide to a product stream comprising an olefinic lower hydrocarbon and synthesis gas in the presence of the catalyst composition La—Mn/inert support, wherein said catalyst composition comprises 1-10 mass % lanthanum and 1-10 mass % manganese and optionally 0.3-3 mass % alkali metal.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: October 14, 2014
    Assignee: Saudi Basic Industries Corporation
    Inventors: Aggadin Kh. Mamedov, Ali S. Al-Khuraimi
  • Publication number: 20140296605
    Abstract: The invention relates to a catalyst composition suitable for the non-oxidative dehydrogenation of alkanes having 2-8 carbon atoms comprising silico-zinc aluminate, wherein the relative molar ratios of the elements comprised in said composition are represented by SixZn1-xAl2O4, wherein x stands for a number in the range from 0.003 to 0.76. The invention also relates to a process for the preparation of said catalyst composition, to a process for the non-oxidative dehydrogenation of alkanes, preferably isobutane using said catalyst and to the use of said catalyst in a process for the non-oxidative dehydrogenation of alkanes.
    Type: Application
    Filed: September 27, 2013
    Publication date: October 2, 2014
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Subhash Chandra Laha, Antonisamy Selvanathan, Sandeep Negi
  • Publication number: 20140296606
    Abstract: The present invention relates to a catalyst bed system including a horizontal catalyst bed having a mixture of at least one catalytic material and at least one first inert material, a predetermined volume of at least one second inert material arranged upstream of the catalyst bed, wherein the volume of the reactor above the catalyst bed system is not filled by any solid material (empty space). The volume of the second inert material and the volume of the reactor above the second inert material (empty space) is between 0.04 and 0.73, preferably between 0.06 and 0.3, most preferably between 0.09 and 0.2. The present invention relates also to a dehydrogenation process using this catalyst bed system.
    Type: Application
    Filed: October 25, 2012
    Publication date: October 2, 2014
    Inventors: Kristof Weyne, Guhan Mathivanan
  • Patent number: 8846996
    Abstract: The present invention provides a process for the manufacture of an efficient and robust catalyst for the oxidative dehydrogenation of paraffins to olefins, preferably lower C2-4 paraffins. The present invention provides a process for the preparation of an oxidative dehydrogenation catalyst of C2-4 paraffins to olefins comprising comminuting: from 10 to 99 weight % of a mixed oxide catalyst of the formula VxMoyNbzTemMenOp, wherein Me is a metal selected from the group consisting of Ta, Ti, W, Hf, Zr, Sb and mixtures thereof; with from 90 to 1 weight % of an inert matrix selected from oxides of titanium, zirconia, aluminum, magnesium, yttria, lantana, silica and their mixed compositions or a carbon matrix to produce particles having a size from 1 to 100 microns and forming the resulting particles into pellets having a size from 0.1 to 2 mm.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: September 30, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Tatyana Nikolaevna Kucherova, Vera Ilynichna Isaeva, Andrzej Krzywicki, Haiyong Cai
  • Publication number: 20140275686
    Abstract: The present invention relates generally to catalysts and methods for use in olefin production. More particularly, the present invention relates to novel amorphously supported single-center, Lewis acid metal ions and use of the same as catalysts.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventor: Uchicago Argonne, LLC
  • Patent number: 8802912
    Abstract: The present invention provides a method of increasing stability of a catalyst used in a dehydrogenation process. The method includes storing fresh catalyst in a reduction zone, passing a gas through the reduction zone, introducing hydrocarbons and hydrogen gas into a reactor positioned downstream from the reduction zone to facilitate a dehydrogenation reaction, and replenishing spent catalyst in the reactor with fresh catalyst from the reduction zone. The gas has a moisture content at or below about 4000 ppmv and a temperature at or below about 290° C. The reactor includes catalyst for increasing the rate of the dehydrogenation reaction. The moisture content of the gas may be reduced to at or below about 4000 ppmv by passing the gas through a drier or by using an inert gas stream. The temperature of the gas may also be reduced.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: August 12, 2014
    Assignee: UOP LLC
    Inventors: Jeffery Pieper, Wei Pan, Dean Rende, Gary Malott
  • Patent number: 8785343
    Abstract: This invention relates to a mesoporous carbon supported copper based catalyst comprising mesoporous carbon, a copper component and an auxiliary element supported on said mesoporous carbon, production and use thereof. The catalyst is cheap in cost, friendly to the environment, and satisfactory in high temperature resistance to sintering, with a highly improved and a relatively stable catalytic activity.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: July 22, 2014
    Assignees: China Petroleum & Chemical Corp., Sinopec Yangzi Petrochemical Co., Ltd.
    Inventors: Jingwei Liu, Zezhuang Li, Shaohui Chen, Aiwu Yang, Jiye Bai, Lijuan Liu, Yingwu Wang
  • Publication number: 20140128653
    Abstract: The present invention provides a process and catalyst for the direct and selective conversion of ethane to ethylene. The process provides a direct single step vapor phase selective dehydrogenation/oxidative dehydrogenation of ethane to ethylene over Mo supported nanocrystalline TiO2. The process provides ethane conversion of 65-96% and selectivity of ethylene up to 100%. The process may be conducted in the presence or absence of oxygen.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 8, 2014
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: RAJARAM BAL, BIPUL SARKAR, RAJIB KUMAR SINGHA, CHANDRASHEKAR PENDEM, SHUBHRA ACHARYYA SHANKHA, SHILPI GHOSH
  • Patent number: 8669406
    Abstract: A process for the dehydrogenation of a paraffinic hydrocarbon compound, such as an alkane or alkylaromatic hydrocarbon compound to produce an unsaturated hydrocarbon compound, such as an olefin or vinyl aromatic compound or mixture thereof, in which a dehydrogenation catalyst contacts gaseous reactant hydrocarbons in a reactor at dehydrogenation conditions.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: March 11, 2014
    Inventors: Matthew T. Pretz, Susan B. Domke, William M. Castor, Simon J. Hamper
  • Patent number: 8653317
    Abstract: A supported catalyst and process for dehydrogenating a hydrocarbon, the catalyst comprising a first component selected from the group consisting of tin, germanium, lead, indium, gallium, thallium, and compounds thereof; a second component selected from the group consisting of metals of Group 8 of the Periodic Table of the Elements and compounds thereof, and a support comprising alumina in the gamma crystalline form. The catalysts are especially active and efficient when employed in concurrent flow in a dehydrogenation reactor having an average contact time between the hydrocarbon and catalyst of from 0.5 to 10 seconds.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: February 18, 2014
    Inventors: Richard A. Pierce, Lin Luo, Michael M. Olken, Susan Domke, Howard W. Clark
  • Patent number: 8642825
    Abstract: The present invention provides a continuous process for the oxidative dehydrogenation of ethane to ethylene using a mixed oxide catalyst supported onto a ceramic membrane by supplying an oxygen containing gas (air or pure oxygen) and pure ethane to the opposite sides of the membrane, so that the paraffin and the oxygen do not directly mix in the reactor.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 4, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Vasily Simanzhenkov, Andrzej Krzywicki
  • Patent number: 8624074
    Abstract: A process for the dehydrogenation of paraffins is presented. The process utilizes a rapid recycling of dehydrogenation catalyst between the dehydrogenation reactor and the catalyst regeneration unit. The process comprises preheating a combined hydrogen and paraffin hydrocarbon feedstream and passing the combined stream to a dehydrogenation reactor. The hydrocarbon feedstream and the catalyst pass through the reactor at a rate to limit the average residence time of the catalyst in the reactor. The catalyst is cycled to a regeneration unit, and passed through the regeneration unit to limit the average residence time of the catalyst in the regeneration unit.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: January 7, 2014
    Assignee: UOP LLC
    Inventors: Gavin P. Towler, Cynthia K. Zimmerman
  • Publication number: 20130324760
    Abstract: A method of crystallizing a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one hydroxide source (OH?), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. %; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr.
    Type: Application
    Filed: August 7, 2013
    Publication date: December 5, 2013
    Inventors: Ivy D. Johnson, Wenyih Frank Lai
  • Publication number: 20130317273
    Abstract: The invention relates to a process for producing an alkene by non-oxidative dehydrogenation of an alkane, comprising contacting a feed stream comprising the alkane with a catalyst composition comprising an unsupported catalyst comprising ZrV2O7 at a temperature of 400 to 600° C.
    Type: Application
    Filed: May 24, 2013
    Publication date: November 28, 2013
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Kartick Chandra Mondal, Patel Himanshu
  • Patent number: 8552237
    Abstract: A dehydrogenation catalyst is described that comprises an iron oxide, an alkali metal or compound thereof, and rhenium or a compound thereof. A process for preparing a dehydrogenation catalyst comprising preparing a mixture of iron oxide, an alkali metal or compound thereof, and rhenium or a compound thereof is also described. Additionally, a dehydrogenation process using the catalyst and a process for preparing polymers are described.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 8, 2013
    Assignee: BASF Corporation
    Inventor: Ruth Mary Kowaleski
  • Publication number: 20130253249
    Abstract: A method of dehydrogenating a hydrocarbon, especially an alkane, to form an unsaturated compound, especially an alkene, includes contacting the alkane with a catalyst including a form of carbon which is catalytically active for the dehydrogenation reaction. The catalyst may be formed by passing a hydrocarbon over a catalyst precursor at an elevated temperature for sufficient time to form the active carbon phase, characterized in that the catalyst precursor includes less than 0.1% of a transition metal.
    Type: Application
    Filed: December 2, 2011
    Publication date: September 26, 2013
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventor: Xavier Elie Baucherel
  • Patent number: 8524969
    Abstract: A method for the dehydrogenation of hydrocarbons to alkenes, such as n-pentene to piperylene and n-butane to butadiene at pressures less than atmospheric utilizing a dehydrogenation catalyst are disclosed. Embodiments involve operating the dehydrogenation reactor at a pressure of 1,000 mbar or less.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: September 3, 2013
    Assignee: Fina Technology, Inc.
    Inventors: James Butler, Olga Khabashesku, James T. Merrill
  • Patent number: 8519210
    Abstract: A process for the oxidative dehydrogenation of ethane is disclosed. The process may include: contacting an ethane feed and an oxygen-containing gas in the presence of an oxidative dehydrogenation catalyst in an oxidative dehydrogenation reaction zone under conditions to oxidatively dehydrogenate at least a portion of the ethane to produce a product stream comprising ethylene, carbon oxides, water, and unreacted oxygen and ethane, wherein an oxygen concentration in the product stream is at least 0.1 mol %; contacting the product stream with an oxygen elimination catalyst in an oxygen elimination reaction zone to combust at least a portion of the oxygen; recovering from the oxygen elimination reaction zone an effluent having a reduced oxygen content; separating water from the effluent; separating carbon oxides and any non-condensable gas(es) from the ethylene and the unreacted ethane; and separating the ethylene from the unreacted ethane.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: August 27, 2013
    Assignee: Lummus Technology Inc.
    Inventors: Stephen Craig Arnold, Anne Mae Gaffney, Ruozhi Song, Chuen Yuan Yeh
  • Publication number: 20130165729
    Abstract: The present invention relates to a catalyst composition suitable for the dehydrogenation of alkanes having 2-8 carbon atoms comprising zinc and/or manganese aluminate, optionally further comprising sodium (Na), potassium (K), caesium (Cs), rubidium (Rb), strontium (Sr), barium (Ba), magnesium (Mg), calcium (Ca), gallium (Ga), germanium (Ge),tin (Sn), copper (Cu), zirconium (Zr), cobalt (Co), tungsten (W) or mixtures thereof, wherein said catalyst composition preferably is essentially platinum free. Furthermore, a method for preparing said catalyst composition and a process for dehydrogenating alkanes having 2-8 carbon atoms, preferably isobutane, comprising contacting the said catalyst composition with said alkanes is provided.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 27, 2013
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventor: Saudi Basic Industries Corporation
  • Publication number: 20130158322
    Abstract: Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are prepared by polymer templated methods and are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethane and/or ethylene. Related methods for use and manufacture of the same are also disclosed.
    Type: Application
    Filed: November 29, 2012
    Publication date: June 20, 2013
    Applicant: SILURIA TECHNOLOGIES, INC.
    Inventor: Siluria Technologies, Inc.
  • Publication number: 20130131418
    Abstract: This invention relates to a mesoporous carbon supported copper based catalyst comprising mesoporous carbon, a copper component and an auxiliary element supported on said mesoporous carbon, production and use thereof. The catalyst is cheap in cost, friendly to the environment, and satisfactory in high temperature resistance to sintering, with a highly improved and a relatively stable catalytic activity.
    Type: Application
    Filed: August 27, 2012
    Publication date: May 23, 2013
    Inventors: Jingwei LIU, Zezhuang Li, Shaohui Chen, Aiwu Yang, Jiye Bai, Lijuan Liu, Yingwu Wang
  • Patent number: 8431761
    Abstract: A method for obtaining an olefin is disclosed, the method comprising subjecting a paraffin to dehydrogenation in the absence of oxygen and in the presence of a catalyst comprising a crystalline substrate, to obtain an olefin. The catalyst includes an inert stabilizing agent for maintaining the catalyst crystal structure. The catalyst may be regenerated by being subjected, in air, to a temperature between about 550° C. and about 750° C., for a period of time between about 15 minutes and about 4 hours.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: April 30, 2013
    Assignee: UOP LLC
    Inventors: Wei Pan, Stephen M. Casey, Bryan K. Glover, Feng Xu
  • Publication number: 20130006030
    Abstract: The oxidative dehydrogenation of propane provides a highly selective catalyst for the oxidative dehydrogenation of propane to propylene, and a process for preparing the catalyst. The catalyst is a mixed metal oxides catalyst of the general formula MoaVbOx, where the molar ratio of molybdenum to vanadium is between 1:1 and 9:1 (a:b is between 0.5:0.5 and 0.9:0.1) and x is determined according to the oxidation state of the cations present. The catalyst is prepared by mixing the metals by sol-gel technique, heating the gel to dry the mixed oxides, further heating the dried product to induce auto-combustion, washing the product with isopropyl alcohol, and drying with a supercritical CO2 dryer. Oxidative dehydrogenation is carried out by contacting a stream of propane gas with the bulk mixed metal oxides catalyst at a temperature between 350° C. and 550° C. Propylene selectivity of 100% is reached at conversion rates between 1.9% and 4.8%.
    Type: Application
    Filed: June 28, 2011
    Publication date: January 3, 2013
    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: SHAKEEL AHMED, HASSAN S. ALASIRI, FAIZUR RAHMAN, ADNAN M.J. AL-AMER
  • Publication number: 20120136191
    Abstract: The invention is a method of dehydrogenating a hydrocarbon, especially an alkane, to form an unsaturated compound, especially an alkene, by contacting the alkane with a catalyst comprising a form of carbon which is catalytically active for the dehydrogenation reaction. The catalyst may be formed by passing a hydrocarbon over a metal compound at a temperature greater than 650° C.
    Type: Application
    Filed: June 4, 2010
    Publication date: May 31, 2012
    Applicants: CAMBRIDGE ENTERPRISE LTD., JOHNSON MATTHEY PLC
    Inventors: Edmund Hugh Stitt, Michael John Watson, Lynn Gladden, James McGregor
  • Publication number: 20120016171
    Abstract: The present invention provides a process for the manufacture of an efficient and robust catalyst for the oxidative dehydrogenation of paraffins to olefins, preferably lower C2-4 paraffins. The present invention provides a process for the preparation of an oxidative dehydrogenation catalyst of C2-4 paraffins to olefins comprising comminuting: from 10 to 99 weight % of a mixed oxide catalyst of the formula VxMoyNbzTemMenOp, wherein Me is a metal selected from the group consisting of Ta, Ti, W, Hf, Zr, Sb and mixtures thereof; with from 90 to 1 weight % of an inert matrix selected from oxides of titanium, zirconia, aluminum, magnesium, yttria, lantana, silica and their mixed compositions or a carbon matrix to produce particles having a size from 1 to 100 microns and forming the resulting particles into pellets having a size from 0.1 to 2 mm.
    Type: Application
    Filed: February 22, 2010
    Publication date: January 19, 2012
    Applicant: Nova Chemicals (International) S.A.
    Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Tatyana Nikolaevna Kucherova, Vera Ilynichna Isaeva, Andrzej Krzywicki, Haiyong Cai
  • Publication number: 20110230698
    Abstract: A process for the dehydrogenation of paraffins is presented. The process utilizes a rapid recycling of dehydrogenation catalyst between the dehydrogenation reactor and the catalyst regeneration unit. The process comprises preheating a combined hydrogen and paraffin hydrocarbon feedstream and passing the combined stream to a dehydrogenation reactor. The hydrocarbon feedstream and the catalyst pass through the reactor at a rate to limit the average residence time of the catalyst in the reactor. The catalyst is cycled to a regeneration unit, and passed through the regeneration unit to limit the average residence time of the catalyst in the regeneration unit.
    Type: Application
    Filed: March 22, 2010
    Publication date: September 22, 2011
    Applicant: UOP LLC
    Inventors: Gavin P. Towler, Cynthia K. Zimmerman
  • Patent number: 7906699
    Abstract: A method for producing a mixture of ethylene and carbon monoxide by contacting ethane and an oxygen source at a temperature of at least 500° C. to produce ethylene and carbon monoxide. A method for producing an alkyl propionate by steps of: (a) contacting ethane and an oxygen source at a temperature of at least 500° C. to produce ethylene; (b) contacting an alcohol, ethylene and carbon monoxide with an ethylene carbonylation catalyst to produce the alkyl propionate; and (c) separating the alkyl propionate from byproducts and starting materials. The method further comprises condensing the alkyl propionate with formaldehyde to produce an alkyl methacrylate.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: March 15, 2011
    Assignee: Rohm and Haas Company
    Inventors: Abraham Benderly, Scott Han, Mark Anthony Silvano, Donald Lee Zolotorofe
  • Patent number: 7902416
    Abstract: An improved process and system for the endothermic dehydrogenation of an alkane stream is described. The process and system of the present invention comprise a back-mixed fluidized bed reactor. The alkane stream is dehydrogenated in a single reactor stage by contacting the alkane stream with a back-mixed fluidized bed of catalyst. Deactivated catalyst is withdrawn from the back-mixed fluidized reactor and heated to produce hot regenerated catalyst. The hot regenerated catalyst is returned to the back-mixed fluidized bed reactor at a rate sufficient to maintain the back-mixed fluidized bed reactor at substantially isothermal conditions.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: March 8, 2011
    Assignee: UOP LLC
    Inventors: Bryan K. Glover, Julie A. Zarraga, Michael A. Schultz
  • Patent number: 7816576
    Abstract: The invention relates to a method for producing unsaturated hydrocarbons. According to said method, in a first step, a hydrocarbon, especially a mixture which contains alkanes, essentially no water, and can contain water vapour, is continuously guided through a first catalyst bed provided with standard dehydration conditions. Liquid water, water vapour and a gas containing oxygen are then added to the reaction mixture obtained in the first step and, in a second step, the reaction mixture obtained is then continuously guided through another catalyst bed for oxidising hydrogen and for further dehydrating hydrocarbons. The first catalyst bed can be heated and the heating in the first step is then preferably regulated in such a way that an essentially isothermic operating mode is created.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: October 19, 2010
    Assignee: UHDE GmbH
    Inventors: Natarajan Thiagarajan, Max Heinritz-Adrian, Sascha Wenzel, Johannes Menzel
  • Publication number: 20100234660
    Abstract: The invention relates to a method for dehydrating alkanes, wherein the alkane is guided in a reactor for the dehydrogenation of alkanes via a catalyst, and the process may be carried out adiabatically or non-adiabatically, and the catalyst for dehydration can be regenerated after the reaction phase by means of transferring a gas, wherein said gas is guided via the catalyst after a short rinsing phase using water vapor, and said regeneration gas consists of a gas containing oxygen and of steam, and after regeneration the catalyst is freed of the gas containing oxygen by transferring steam, wherein the duration of the transfer of a gas containing oxygen is significantly reduced as compared to common methods and represents 70% or less of the total regeneration time, and the catalyst has an increased selectivity for forming alkene by means of carrying out the regeneration at a constant activity, and the catalyst is comprised of a metal of the group of platinum metals or group VIB of the periodic table of the elem
    Type: Application
    Filed: July 24, 2008
    Publication date: September 16, 2010
    Applicant: UHDE GMBH
    Inventors: Helmut Gehrke, Max Heinritz-Adrian, Muhammad Iqbal Mian, Oliver Noll, Rolf Schwass, Sascha Wenzel
  • Patent number: 7795483
    Abstract: The present invention is a process for producing phenyl-alkanes by paraffin adsorptive separation followed by paraffin dehydrogenation and then by alkylation of a phenyl compound by a lightly branched olefin. The adsorptive separation step employs a silicalite adsorbent and, as the desorbent, a C5-C8 linear paraffin, a C5-C8 cycloparaffin, a branched paraffin such as isooctane, or mixtures thereof. The effluent of the alkylation zone comprises paraffins that are recycled to the adsorptive separation step or to the dehydrogenation step. This invention is also a process that that sulfonates phenyl-alkanes having lightly branched aliphatic alkyl groups that to produce modified alkylbenzene sulfonates. In addition, this invention is the compositions produced by these processes, which can be used as detergents having improved cleaning effectiveness in hard and/or cold water while also having biodegradability comparable to that of linear alkylbenzene sulfonates, as lubricants, and as lubricant additives.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: September 14, 2010
    Assignee: UOP LLC
    Inventors: Santi Kulprathipanja, Richard E. Marinangeli, Stephen W. Sohn, Thomas R. Fritsch, R. Joe Lawson
  • Patent number: 7754935
    Abstract: Methods of dehydrogenating hydrocarbons to yield unsaturated compounds are described. Reactor configurations useful for dehydrogenation are also described. Hydrocarbons can be dehydrogenated, for relatively long periods of time-on-stream, in a reaction chamber having a dimension of 2 mm or less to produce H2 and an olefin. Techniques have been developed that reduce coke and allow stable, relatively long-term operation in small reactors.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: July 13, 2010
    Assignee: Velocys
    Inventors: John H. Brophy, Gary Roberts, G. Bradley Chadwell, Matthew B. Schmidt, Anna Lee Tonkovich
  • Publication number: 20100087694
    Abstract: A high cerium-containing dehydrogenation catalyst of alkyl aromatic compounds used in industrial scale, including iron oxide and potassium oxide, having improved physical strength of catalyst pellets, and a method for producing the catalyst, and the dehydrogenation method using the catalyst are disclosed. In producing high cerium-containing pellets by using a dehydrogenation catalyst including iron oxide and potassium oxide, cerium carbonate hydroxide or a mixture of cerium carbonate hydroxide and other cerium compounds is used as a cerium source to produce catalytic pellets having improved physical strength.
    Type: Application
    Filed: January 25, 2008
    Publication date: April 8, 2010
    Applicant: SUED-CHEMME CATALYST JAPAN, INC
    Inventor: Yuji Mishima
  • Patent number: 7678956
    Abstract: The invention relates to a method for producing propylene during which a first gas mixture, which is technically free of oxygen but contains propane, water vapor and hydrogen, and which has a temperature of at least 400° C., is led into a reaction device having at least one catalyst bed as well as usual dehydration conditions. Another gas mixture, which contains propane and oxygen and which can also contain ammonia, the propane content exceeding the oxygen content, is led into the same reaction device in which it reacts with the first gas mixture while forming propylene, water vapor and hydrogen, and the formed gas mixture containing propylene, water vapor and hydrogen is drawn out of the reaction device.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: March 16, 2010
    Assignee: Uhde GmbH
    Inventor: Max Heinritz-Adrian
  • Patent number: 7674944
    Abstract: Catalysts and methods for alkane oxydehydrogenation are disclosed. The catalysts of the invention generally comprise (i) nickel or a nickel-containing compound and (ii) at least one or more of titanium (Ti), tantalum (Ta), niobium (Nb), hafnium (Hf), tungsten (W), yttrium (Y), zinc (Zn), zirconium (Zr), or aluminum (Al), or a compound containing one or more of such element(s). In preferred embodiments, the catalyst is a supported catalyst, the alkane is selected from the group consisting of ethane, propane, isobutane, n-butane and ethyl chloride, molecular oxygen is co-fed with the alkane to a reaction zone maintained at a temperature ranging from about 250° C. to about 350° C., and the ethane is oxidatively dehydrogenated to form the corresponding alkene with an alkane conversion of at least about 10% and an alkene selectivity of at least about 70%.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: March 9, 2010
    Assignee: Celanese International Corporation
    Inventor: Yumin Liu
  • Patent number: 7663011
    Abstract: A process for treating organic compounds includes providing a composition which includes a substantially mesoporous structure of refractory oxide containing at least 97% by volume of pores having a pore size ranging from about 15 ? to about 30 ? and having a micropore volume of at least about 0.01 cc/g, wherein the mesoporous structure has incorporated therewith at least about 0.02% by weight of at least one catalytically and/or chemically active heteroatom selected from the group consisting of Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Pt and W, and the catalyst has an X-ray diffraction pattern with one peak at 0.3° to about 3.5° at 2 theta (?). The catalyst is contacted with an organic feed under reaction conditions wherein the treating process is selected from alkylation, acylation, oligomerization, selective oxidation, hydrotreating, isomerization, demetalation, catalytic dewaxing, hydroxylation, hydrogenation, ammoximation, isomerization, dehydrogenation, cracking and adsorption.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: February 16, 2010
    Assignee: Lummus Technology Inc.
    Inventors: Zhiping Shan, Jacobus Cornelis Jansen, Chuen Y. Yeh, Philip J. Angevine, Thomas Maschmeyer, Mohamed S. Hamdy
  • Publication number: 20100022816
    Abstract: A method for the dehydrogenation of isoamylene to isoprene at pressures less than atmospheric utilizing a dehydrogenation catalyst is disclosed. Embodiments involve operating the dehydrogenation reactor at a pressure of 1,000 mbar or less.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 28, 2010
    Applicant: Fina Technology, Inc.
    Inventor: James T. Merrill
  • Publication number: 20100022817
    Abstract: A method for the dehydrogenation of hydrocarbons to alkenes, such as n-pentene to piperylene and n-butane to butadiene at pressures less than atmospheric utilizing a dehydrogenation catalyst are disclosed. Embodiments involve operating the dehydrogenation reactor at a pressure of 1,000 mbar or less.
    Type: Application
    Filed: July 21, 2009
    Publication date: January 28, 2010
    Applicant: Fina Technology, Inc.
    Inventors: James Butler, Olga Khabashesku
  • Publication number: 20090325784
    Abstract: A method for obtaining an olefin is disclosed, the method comprising subjecting a paraffin to dehydrogenation in the absence of oxygen and in the presence of a catalyst comprising a crystalline substrate, to obtain an olefin. The catalyst includes an inert stabilizing agent for maintaining the catalyst crystal structure. The catalyst may be regenerated by being subjected, in air, to a temperature between about 550° C. and about 750° C, for a period of time between about 15 minutes and about 4 hours.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 31, 2009
    Inventors: Wei Pan, Stephen M. Casey, Bryan K. Glover, Feng Xu
  • Publication number: 20090292153
    Abstract: Lower paraffins may be oxidatively dehydrogenated in the presence of an oxidative dehydrogenation catalyst and one or more reducible metal oxides selected from the group consisting of NiO, Ce2O3, Fe2O3, TiO2, Cr2O3, V2O5, WO3, and mixtures thereof optionally with alumina may be dehydrogenated (regenerated) under milder conditions in a safe manner with the oxygen being provided by the metal oxides rather than direct addition of oxygen to the reactor.
    Type: Application
    Filed: May 12, 2009
    Publication date: November 26, 2009
    Inventors: Haiyong Cai, Andrzej Krzywicki
  • Patent number: 7595427
    Abstract: Process for production of styrene by dehydrogenation of ethylbenzene in a reactor system comprising a dehydrogenation reactor and a fast riser catalyst regenerator.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: September 29, 2009
    Assignee: Snamprogetti S.p.A.
    Inventors: Domenico Sanfilippo, Ivano Miracca, Guido Capone, Vincenzino Fantinuoli
  • Patent number: 7518027
    Abstract: A process for the production of a mono-olefin from a feedstock comprising a paraffinic hydrocabon which process comprises a) partially combusting at a pressure of at least (15) barg a mixture of the hydrocarbon feed and a molecular oxygen-containing gas in contact with a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability where they are reacted to form a product comprising one or more mono-olefin(s), carbon monoxide and hydrogen and b) recovering the one or more olefin(s).
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: April 14, 2009
    Assignee: Innovene Europe Limited
    Inventors: Andrew Lindsay Burns, David Charles Griffiths, William Terence Woodfin
  • Publication number: 20090062588
    Abstract: A dehydrogenation catalyst is described comprising an iron oxide, an alkali metal or compound thereof, and silver or a compound thereof. Further a process is described for preparing a dehydrogenation catalyst that comprises preparing a mixture of iron oxide, an alkali metal or compound thereof, and silver or a compound thereof and calcining the mixture. A process for dehydrogenating a dehydrogenatable hydrocarbon and a process for polymerizing the dehydrogenated hydrocarbon are also described.
    Type: Application
    Filed: May 1, 2008
    Publication date: March 5, 2009
    Inventor: Ruth Mary KOWALESKI
  • Publication number: 20090023972
    Abstract: Catalytic structures are provided comprising octahedral tunnel lattice manganese oxides ion-exchanged with metal cations or mixtures thereof. The structures are useful as catalysts for the oxidation of alkanes and may be prepared by treating layered manganese oxide under highly acidic conditions, optionally drying the treated product, and subjecting it to ion exchange.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 22, 2009
    Inventors: Helge Jaensch, Wilfried J. Mortier